VM "unable to read data from virtual disk" error.
Extract from binary log:Error 2010/11/19 15:31:06 75 Data Plugin S29 Failed
to read data from virtual disk
Binary log Subtext:Module Id Code Time
Message PLGLIB 1017 0 152810 Rewrite Data - unwritten data length 0 VDDK
45 0 153106 Failed to read disk data VDDK 138 0 153106 VDDK error
encountered: code 16000 VDDK 139 0 153106 Retrieving error message
text VDDK 52 0 153106 VDDK error message is 'One of the parameters supplied
is invalid' VMWBCKUP 119 0 153106 Failed to read virtual disk at sector
181581184
This particular 'unable to read data from virtual disk' error is most likely caused by the VM being moved to a different ESX server rendering the existing job selection incorrect. This can happen if the VM in question was selected explicitly through the ESX server and not at the Vsphere server level.
Recreate the job and select the VM through the Vsphere server level or through the ESX server it has been moved to